Issue 7, 2023

Highly efficient and stable green fluorescent OLEDs with high color purity using a BODIPY derivative

Abstract

Although high color purity and efficient organic light-emitting devices (OLEDs) are imperative for high-resolution display applications, the stability of these OLEDs lags far behind that of OLEDs based on conventional thermally activated delayed fluorescent and/or phosphorescent emitters. In this work, using a BODIPY derivative, we successfully developed a high-efficiency, long-lifetime green OLED with high color purity. Based on sophisticated device engineering especially by reducing carrier accumulation at the hole-transporter/emission layer interface, the optimized device realized a narrow full width at half maximum of 32 nm, CIE coordinates of (0.28, 0.67), external quantum efficiency of approximately 19%, and lifetime (LT50) of 14 000 h at 1000 cd m−2. The device stability was 4.7 times longer than that in the previous work, and among the best reported in the related literature.

Graphical abstract: Highly efficient and stable green fluorescent OLEDs with high color purity using a BODIPY derivative

Supplementary files

Article information

Article type
Paper
Submitted
20 Feb 2023
Accepted
03 Mar 2023
First published
20 Mar 2023

Mol. Syst. Des. Eng., 2023,8, 866-873

Highly efficient and stable green fluorescent OLEDs with high color purity using a BODIPY derivative

T. Nakamura, H. Sasabe, S. Abe, K. Kumada, R. Sugiyama, T. Hanayama and J. Kido, Mol. Syst. Des. Eng., 2023, 8, 866 DOI: 10.1039/D3ME00029J

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